All-GNSS-Band DRA Antenna for High-Precision Applications

Caizzone, Stefano; Circiu, Mihaela-Simona; Elmarissi, Wahid; Enneking, Christoph

doi:10.1049/cp.2018.0902

Cited by 9 publications

(13 citation statements)

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“…This can be obtained by ensuring that the antennas operate in such conditions to only allow the radiation of the wanted smooth pattern, inhibiting on the other hand any contribution from secondary antenna modes or diffraction from nearby objects. In this regard, multipoint feeding techniques are very beneficial, as they ensure higher order mode suppression and hence allow for smoother patterns throughout the upper hemisphere …”

Section: Results and Experimental Validationmentioning

confidence: 99%

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Antenna influence on Global Navigation Satellite System pseudorange performance for future aeronautics multifrequency standardization

Caizzone¹,

Circiu

Elmarissi³

et al. 2019

NAVIGATION

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Current standardization activities in the aeronautical community are paving the way to using multifrequency multiconstellation GNSS as a primary means of aircraft navigation. The increase in the number of satellites from different constellations as well as the increasing use of multiple frequency GNSS receivers promise improvements in the achievable accuracy in GNSS positioning. The effects of receiver antennas shall be investigated because of the stronger impact of possible imperfections on the overall error budget for multifrequency combinations. The scope of this paper is to show the possibility of properly modeling and indeed characterizing the antenna-induced GNSS pseudorange errors, through simulations and electromagnetic measurement. An insight into antenna characteristics giving rise to such errors will be given, by analyzing the impact of the feeding technique on the achievable pattern uniformity and hence on antenna-related pseudorange errors. The technique is then validated through GNSS field measurement.

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Section: Results and Experimental Validationmentioning

confidence: 99%

“…The antennas under test are (a) an in‐house developed passive antenna with two feeds and (b) an in‐house developed passive four‐feed antenna . Both antennas are properly tuned in order to obtain optimal gain and minimum reflection losses at L1/E1 and L5/E5a central frequency.…”

Section: Results and Experimental Validationmentioning

confidence: 99%

Antenna influence on Global Navigation Satellite System pseudorange performance for future aeronautics multifrequency standardization

Caizzone¹,

Circiu

Elmarissi³

et al. 2019

NAVIGATION

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show abstract

“…The employed dielectric resonator antenna was developed at DLR and features four modes, which are excited independently. Details can be found in [20]. To perform manifold separation in (5), U = 13 is chosen as order of the basis functions (6).…”

Section: Measurement Setupmentioning

confidence: 99%

In-Field Calibration of a Multi-Mode Antenna for DoA Estimation

Pöhlmann

Staudinger

Zhang

et al. 2021

2021 15th European Conference on Antennas and Propagation (EuCAP)

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State-of-the-art radio localization methods often rely on estimating the signal direction-of-arrival (DoA) or directionof-departure (DoD). This requires careful calibration of the antenna, including surrounding structure, in a measurement chamber. Alternatively, auto-calibration algorithms can be used for certain types of phased arrays. However, they cannot correct all model errors and cannot be applied to other types of multiport antennas like multi-mode antennas (MMAs) or collocated antennas. In this paper, we present a maximum a posteriori (MAP) in-field calibration algorithm based on wavefield modeling and manifold separation for arbitrary multiport antennas. The algorithm is evaluated using measurements of a four-port MMA mounted on a rover. A significant performance gain for DoA estimation using in-field calibration is achieved compared to calibration in a chamber.

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“…The MMA used in this stuy and developed at DLR [32] has been measured in an anechoic chamber at DoAs φ q with q = 1, .., Q, yielding Q spatial samples of the antenna response for a specific DoA, e q = e q,1 ... e q,M T ,…”

Section: Multi-mode Antennamentioning

confidence: 99%

“…Figure 4 shows both the discrete antenna power and phase pattern E from the measurement chamber and the continuous antenna response vector a(φ) obtained by wavefield modeling. Details about the employed antenna can be found in [32].…”

Section: Multi-mode Antennamentioning

confidence: 99%

Multi-Mode Antenna Enabled Direction-of-Arrival Estimation for Swarm Navigation

Pöhlmann

Pedregosa

Caizzone

et al. 2019

2019 16th Workshop on Positioning, Navigation and Communications (WPNC)

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Robotic swarm or multi-agent systems attract increasing attention for extraterrestrial exploration missions, among others. Control of a swarm requires communication among agents and accurate knowledge about their position and orientation. Both can be provided by radio signals exchanged between the agents. For navigation, round-trip delay (RTD) and direction-of-arrival (DoA) are informative signal metrics, as they relate to the relative distances and angles between the agents. DoA estimation is usually performed using antenna arrays. Recently, multi-mode antennas (MMAs) have been suggested as an alternative, but so far only theoretical results exist. This paper presents measurement results for DoA estimation with a single MMA mounted on a rover. The median estimation error of 7.2 • for a moving rover proves the potential of DoA estimation with an MMA.

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All-GNSS-Band DRA Antenna for High-Precision Applications

Cited by 9 publications

References 0 publications

Antenna influence on Global Navigation Satellite System pseudorange performance for future aeronautics multifrequency standardization

Antenna influence on Global Navigation Satellite System pseudorange performance for future aeronautics multifrequency standardization

In-Field Calibration of a Multi-Mode Antenna for DoA Estimation

Multi-Mode Antenna Enabled Direction-of-Arrival Estimation for Swarm Navigation

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